MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If for power transmission a gear train consisting of 11 gears is used, then |
| A. | the motion of driver and follower will be in the same direction |
| B. | The motion of driver and follower will be in the opposite direction |
| C. | either of (A) or (B) above |
| D. | None of the above |
| E. | 107 dynes |
| Answer» B. The motion of driver and follower will be in the opposite direction | |
| 2. |
In a tug of war, five men pull a rope to the left at A and six moen pull the rope at B. A weight of 5 kg is hung vertically from the centre of the rope. In order that the rope AB be horizontal |
| A. | the force applied on A must be equal to that on B |
| B. | at least one man on side B should be removed |
| C. | infinite force will be required to be applied at both ends |
| D. | the force required on A must not be equal to that on B |
| E. | 107 dynes |
| Answer» D. the force required on A must not be equal to that on B | |
| 3. |
In planetary motion |
| A. | The total angular momentum remains constant |
| B. | The total linear momentum remains constant |
| C. | The total linear momentum is zero |
| D. | The total angular momentum is zero |
| E. | None of the above |
| Answer» B. The total linear momentum remains constant | |
| 4. |
A cable is supported at A and B, in which B is higher than A. The tension in the cable will be maximum at |
| A. | A |
| B. | A and B |
| C. | C |
| D. | B |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 5. |
The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as |
| A. | Kinetic friction |
| B. | Rolling friction |
| C. | Dynamic friction |
| D. | Limiting friction |
| E. | Sliding friction |
| Answer» E. Sliding friction | |
| 6. |
A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the force exerted by the jet on the plate would be in the range |
| A. | 15 - 20 kg |
| B. | 20 - 25 kg |
| C. | 5 - 10 kg |
| D. | 25 - 30 kg |
| E. | 10 - 15 kg |
| Answer» B. 20 - 25 kg | |
| 7. |
A machine requires an effort of 10 kg to lift a load of 250 kg and an effort of 13 kg for a load of 400 kg. The effort required to lift a load of 500 kg will be |
| A. | 25 kg |
| B. | 107 dynes |
| C. | 15 kg |
| D. | 35 kg |
| E. | 45 kg |
| Answer» D. 35 kg | |
| 8. |
For the maximum range of a projectile the angle of projection should be |
| A. | 90? |
| B. | 30? |
| C. | 22 |
| D. | 45? |
| E. | 15? |
| Answer» E. 15? | |
| 9. |
In the speed of rotation of earth decreases, the weight of the body will |
| A. | Decrease |
| B. | Remain unaltered |
| C. | Depends on speed ratio |
| D. | Cannot be ascertained on the basis the information given |
| E. | Increase |
| Answer» D. Cannot be ascertained on the basis the information given | |
| 10. |
Secondary stresses may be set up in frame due to any of the following reasons EXCEPT |
| A. | members not being straight |
| B. | self-weight of the members |
| C. | eccentricity of connections |
| D. | rigidity of the members |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 11. |
Which of the following is not a lever of the first order? |
| A. | Pair of Smith's tongs |
| B. | Wheel barrow |
| C. | Ordinary balance |
| D. | Pair of scissors |
| E. | 107 dynes |
| Answer» C. Ordinary balance | |
| 12. |
The angular acceleration of a flywheel decreases uniformly from 8 rad/sec2 to 2 rad sec2 in 6 sec at which time its angular velocity is 42 rad/sec. The initial angular velocity was |
| A. | 12 rad/sec |
| B. | 24 rad/sec |
| C. | 30 rad/sec |
| D. | 3 rad/sec |
| E. | 6 rad/sec |
| Answer» B. 24 rad/sec | |
| 13. |
A apinning ballet dancer draws her arms close to her chest. She will now |
| A. | 107 dynes |
| B. | spin at the same rate |
| C. | spin faster |
| D. | spin slower |
| E. | stop spinning |
| Answer» E. stop spinning | |
| 14. |
The breaking strength of a rope is 400 N. A fireman weighing 60 kg slides down the rope. The rope will break if |
| A. | 107 dynes |
| B. | the acceleration is 7.5 m/s2 |
| C. | the acceleration is 1.2 m/s2 |
| D. | the acceleration is 3.1 m/s2 |
| E. | the slides with an acceleration of 15 m/s2 |
| Answer» D. the acceleration is 3.1 m/s2 | |
| 15. |
During SHM which of the following is conserved? |
| A. | Kinetic energy |
| B. | Potential energy |
| C. | Total energy |
| D. | Momentum |
| E. | All of the above |
| Answer» E. All of the above | |
| 16. |
The main advantage of using worm gears is |
| A. | Low power loss |
| B. | High velocity ratio |
| C. | Ease of manufacture |
| D. | Minimum cost |
| E. | All of the above |
| Answer» D. Minimum cost | |
| 17. |
In case of a beam subjected to pure bending |
| A. | 107 dynes |
| B. | the stress intensity in any fibre is proportional to the distance of the fibre from the neutral axis |
| C. | the stress intensity in any fibre is proportional to the distance of the fibre from the load carrying end |
| D. | the stress intensity in any fibre is uniform |
| E. | the nature of stress in any fibre is identical |
| Answer» C. the stress intensity in any fibre is proportional to the distance of the fibre from the load carrying end | |
| 18. |
ML2T-2 could be the dimension of all of the following EXCEPT |
| A. | Energy |
| B. | Work |
| C. | 107 dynes |
| D. | Power |
| E. | Torque |
| Answer» E. Torque | |
| 19. |
The standard angle between the sides of a V-belt is |
| A. | 30? |
| B. | 25? |
| C. | 40? |
| D. | 45? |
| E. | 55? |
| Answer» B. 25? | |
| 20. |
If span is 150 mts and sag is 10 ft of a cable carrying a load of 3200 kg per horizontal metre then tension of ends is |
| A. | 104,000 kg |
| B. | 107 dynes |
| C. | 1200,000 kg |
| D. | 932,000 kg |
| E. | 584,000 kg |
| Answer» E. 584,000 kg | |
| 21. |
A block slides down a smooth inclined plane when released from the top while another falls freely from the same point. The value of which parameter in the two cases will be identical? |
| A. | Time taken to reach the ground |
| B. | Kinetic energy at the ground |
| C. | Momentum at the ground |
| D. | Velocity while touching the ground |
| E. | Kinetic energy after one second |
| Answer» E. Kinetic energy after one second | |
| 22. |
In which case power required would be more |
| A. | In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec |
| B. | In lowering a weight of 100 kg along an a inclined plane at an angle of 45? with |
| C. | In lifting up a weight of 100 kg at a constant speed of 3 m/sec |
| D. | In lowering the weight at a constant speed of 3 m/sec |
| E. | In lowering the weight at a velocity of 3 m/sec and acceleration of 1 m/sec2 |
| Answer» B. In lowering a weight of 100 kg along an a inclined plane at an angle of 45? with | |
| 23. |
The excape velocity on the surface of the earth is |
| A. | 11.2 km/s |
| B. | 2.2 km/s |
| C. | 5.6 km/s |
| D. | 4.4 km/s |
| E. | 1 km/s |
| Answer» F. | |
| 24. |
The time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m is equal to |
| A. | 8 sec |
| B. | 2 sec |
| C. | 4 sec |
| D. | 10 sec |
| E. | 6 sec |
| Answer» D. 10 sec | |
| 25. |
Plastic collosion of two bodies of equal mass results in a common velocity after impact which is |
| A. | Sum of their initial velocities |
| B. | Difference of their initial velocities |
| C. | Average of their initial velocities |
| D. | Independent of their initial velocities |
| E. | None of the above |
| Answer» F. | |
| 26. |
In above problem the resultant reaction between the cannon and the ground would be |
| A. | 1146 tonnes |
| B. | 573 tonnes |
| C. | 286.5 tonnes |
| D. | 50 tonnes |
| E. | 145 tonnes |
| Answer» C. 286.5 tonnes | |
| 27. |
The centre of percussions is |
| A. | The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis |
| B. | The point of application of the resultant of gravity and buoyancy forces of the body |
| C. | The same as centre of gravity |
| D. | The metacentre of the body |
| E. | The point in a body about which it can rotate horizontally and oscillates under the influence of gravity |
| Answer» B. The point of application of the resultant of gravity and buoyancy forces of the body | |
| 28. |
A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be |
| A. | 1 sec |
| B. | 4 sec |
| C. | 2 sec |
| D. | 5 sec |
| E. | 3 sec |
| Answer» D. 5 sec | |
| 29. |
The principle of conservation of energy cannot be applied in case of |
| A. | Flow of water in a pipe |
| B. | A particle moving in gravitational field |
| C. | Frictional movement of a particle over a surface |
| D. | Frictionless movement of a principle over a surface |
| E. | Simple pendulum |
| Answer» D. Frictionless movement of a principle over a surface | |
| 30. |
The necessary condition of equilibrium of a body is |
| A. | The algebraic sum of horizontal components of all forces must be zero |
| B. | The algebraic sum of vertical components of all forces must be zero |
| C. | The algebraic sum of forces about a point must be zero |
| D. | All the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 31. |
The sag in a tape 100 ft long held between two supports 99.8 ft aprat at the same level is |
| A. | 3.32 ft |
| B. | 0.98 ft |
| C. | 2.73 ft |
| D. | 1.87 ft |
| E. | 107 dynes |
| Answer» D. 1.87 ft | |
| 32. |
Femtometre x Nanometer x (Gigametre)2 = |
| A. | Micrometre |
| B. | Metre |
| C. | Picometre |
| D. | 107 dynes |
| E. | Megametre |
| Answer» B. Metre | |
| 33. |
How many coins 0.75 cm in diameter and 1/8 cm thick must be malted down to form a rectangular solid whose edges are 5 cm. 4 cm and 3 cm? |
| A. | 584 |
| B. | 1087 |
| C. | 0.00001745 sec-1 |
| D. | 1234 |
| E. | 2174 |
| Answer» C. 0.00001745 sec-1 | |
| 34. |
A car travelling at a speed of 60 km/hour is braked and comes to rest 6 seconds after the brakes are applied. The minimum coefficient of driction between the wheels and the road would be |
| A. | 0.107 |
| B. | 0.3 |
| C. | 0.283 |
| D. | 0.417 |
| E. | 0.5 |
| Answer» D. 0.417 | |
| 35. |
In case of cantilever, irrespective of the type of loading the maximum bendry moment and maximum shear force occur at |
| A. | 107 dynes |
| B. | Free end |
| C. | 2/3 of the length, from the free end |
| D. | Centre of the beam |
| E. | Fixed end |
| Answer» F. | |
| 36. |
If the positive and negative shear force diagram areas are not equal, it can be concluded that |
| A. | shear force diagram has been wrongly drawn |
| B. | there is at least one couple acting on the beam |
| C. | 107 dynes |
| D. | there are at least two maxima for bending moment |
| E. | bending moment does not change sign |
| Answer» C. 107 dynes | |
| 37. |
The value of acceleration due to gravity is 980 cm/sec2. Its value in meter per (hour)2 will be |
| A. | 1.27 x 108 |
| B. | 127 |
| C. | 1270 |
| D. | 1.27 x 107 |
| E. | 1270000 |
| Answer» B. 127 | |
| 38. |
A beam fixed at both ends with a central load W in the middle will have zero bending moment at |
| A. | one place |
| B. | two places |
| C. | no where |
| D. | three places |
| E. | 107 dynes |
| Answer» C. no where | |
| 39. |
The maximum efficiency of a scres jack having square threads and friction angle of 30 degree will be |
| A. | 20% |
| B. | 11% |
| C. | 5% |
| D. | 33% |
| E. | 9% |
| Answer» E. 9% | |
| 40. |
The forces which meet at one point but their lines of action do not lie in one plane, are called |
| A. | Coplanar noncurrent forces |
| B. | Non-coplanar nonconcurrent forces |
| C. | Intersecting forces |
| D. | Coplanar concurrent forces |
| Answer» D. Coplanar concurrent forces | |
| 41. |
Our weight will be zero under all of the following conditions EXCEPT |
| A. | 107 dynes |
| B. | We are at the centre of the earth |
| C. | When we are ascending in a lift with acceleration of 4.9 m/s2 |
| D. | We are orbiting in a satellite |
| E. | When we are freely faling |
| Answer» D. We are orbiting in a satellite | |
| 42. |
ML2T-2 could be the dimension of |
| A. | 107 dynes |
| B. | moment of force |
| C. | viscosity |
| D. | mass moment of inertia |
| E. | momentum |
| Answer» C. viscosity | |
| 43. |
Static friction is always |
| A. | greater than the dynamic driction |
| B. | either greater or more than the dynamic friction |
| C. | less than the dynamic friction |
| D. | 107 dynes |
| E. | equal to the dynamic friction |
| Answer» B. either greater or more than the dynamic friction | |
| 44. |
If a particle charges its angular velocity from 30 to 35 rpm in 20 seconds then it has angular acceleration of |
| A. | 107 dynes |
| B. | 30 rev/min2 |
| C. | 10 rev/min2 |
| D. | 20 rev/min2 |
| E. | 15 rev/min2 |
| Answer» F. | |
| 45. |
Newton, dyne and poundal are known as |
| A. | absolute units |
| B. | fundamental units |
| C. | gravitational units |
| D. | absolute units |
| E. | 107 dynes |
| Answer» E. 107 dynes | |
| 46. |
Water rises in a capillary tube to a height h. It will rise to a height more than h. |
| A. | in a lift moving up with an acceleration |
| B. | in all the above cases |
| C. | 107 dynes |
| D. | at the poles |
| E. | on the surface of moon |
| Answer» F. | |
| 47. |
Under which circumstances will have zero velocity and be still accelerating? |
| A. | The bob of a simple pendulum when at its mean position |
| B. | 107 dynes |
| C. | A steamer while taking a turn |
| D. | A ball at its highest point of its rise when thrown up |
| E. | Tyres of a stationary automobile |
| Answer» E. Tyres of a stationary automobile | |
| 48. |
A body whose true weight is 14 kg appears to weigh 15 kg when weighed with the help of a spring balance in a moving lift. The acceleration of the lift at the time was |
| A. | 1 m/sec2 |
| B. | 0.7 m/sec2 |
| C. | 0.5 m/sec2 |
| D. | 1.4 m/sec2 |
| E. | 0.35 m/sec2 |
| Answer» C. 0.5 m/sec2 | |
| 49. |
If the above tape weights 0.001 kg/ft, sag is |
| A. | 2.73 ft |
| B. | 3.13 ft |
| C. | 2.90 ft |
| D. | 3.03 ft |
| E. | 107 dynes |
| Answer» D. 3.03 ft | |
| 50. |
Efficiency of a screw jack in maximum when its 31 helix angle, ? is |
| A. | 45 + ?/2 |
| B. | 107 dynes |
| C. | ? |
| D. | 45 - ?/2 |
| E. | 45? |
| Answer» E. 45? | |